CN114405660A - Ore grinding process capable of reducing excessive crushing of product - Google Patents
Ore grinding process capable of reducing excessive crushing of product Download PDFInfo
- Publication number
- CN114405660A CN114405660A CN202210104350.7A CN202210104350A CN114405660A CN 114405660 A CN114405660 A CN 114405660A CN 202210104350 A CN202210104350 A CN 202210104350A CN 114405660 A CN114405660 A CN 114405660A
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- ore
- feeding
- ore grinding
- grading
- durite
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000000227 grinding Methods 0.000 title claims abstract description 36
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 24
- 239000011707 mineral Substances 0.000 claims abstract description 24
- 239000004576 sand Substances 0.000 claims abstract description 24
- 238000005406 washing Methods 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 4
- 239000010419 fine particle Substances 0.000 claims description 3
- 238000009776 industrial production Methods 0.000 claims description 3
- 239000002223 garnet Substances 0.000 abstract description 7
- 238000010494 dissociation reaction Methods 0.000 abstract description 6
- 230000005593 dissociations Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000000178 monomer Substances 0.000 abstract description 4
- 238000011161 development Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract 1
- 238000007873 sieving Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 7
- 229910052611 pyroxene Inorganic materials 0.000 description 4
- 238000012216 screening Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005488 sandblasting Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229920000965 Duroplast Polymers 0.000 description 1
- 239000004638 Duroplast Substances 0.000 description 1
- JYIBXUUINYLWLR-UHFFFAOYSA-N aluminum;calcium;potassium;silicon;sodium;trihydrate Chemical compound O.O.O.[Na].[Al].[Si].[K].[Ca] JYIBXUUINYLWLR-UHFFFAOYSA-N 0.000 description 1
- INJRKJPEYSAMPD-UHFFFAOYSA-N aluminum;silicic acid;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O INJRKJPEYSAMPD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- NWXHSRDXUJENGJ-UHFFFAOYSA-N calcium;magnesium;dioxido(oxo)silane Chemical compound [Mg+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O NWXHSRDXUJENGJ-UHFFFAOYSA-N 0.000 description 1
- -1 chrysolite Substances 0.000 description 1
- 229910001603 clinoptilolite Inorganic materials 0.000 description 1
- 229910052871 clinozoisite Inorganic materials 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 229910052637 diopside Inorganic materials 0.000 description 1
- YGANSGVIUGARFR-UHFFFAOYSA-N dipotassium dioxosilane oxo(oxoalumanyloxy)alumane oxygen(2-) Chemical compound [O--].[K+].[K+].O=[Si]=O.O=[Al]O[Al]=O YGANSGVIUGARFR-UHFFFAOYSA-N 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010437 gem Substances 0.000 description 1
- 229910001751 gemstone Inorganic materials 0.000 description 1
- 229910052631 glauconite Inorganic materials 0.000 description 1
- 229910052892 hornblende Inorganic materials 0.000 description 1
- 229910052640 jadeite Inorganic materials 0.000 description 1
- 229910052850 kyanite Inorganic materials 0.000 description 1
- 239000010443 kyanite Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052627 muscovite Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 229910021539 ulexite Inorganic materials 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
Abstract
The invention relates to the field of mineral resource development, in particular to an ore grinding process for reducing over-crushing of durite type minerals. The main problems solved by the process are to ensure the monomer dissociation degree and reduce the mineral over-crushing, and the process mainly comprises the following steps: A. feeding the crushed qualified ore raw materials into a spiral ore washer, overflowing the ore washer to enter a hydrocyclone for further desliming and recovering garnet after ore washing, and feeding returned sand into a mill; B. sieving by a self-flowing linear vibrating screen generated by ore grinding, wherein the undersize fraction enters a sorting process, and the oversize coarse grains return to regrind to form a section of closed circuit ore grinding; C. the overflow product of the desliming and grading of the hydrocyclone is mainly slime which directly enters the next working procedure, and the settled sand is mainly mineral which is mixed with the product of the grinding and grading qualified grade and enters the next grading working procedure. The method of the invention is easy to realize on the basis of the prior art, has economic and reasonable technology, and has the characteristics of simple flow and high benefit.
Description
The technical field is as follows:
the invention relates to the field of mineral resource development, in particular to an ore grinding process for reducing over-crushing of durite type minerals.
Background art:
the monomer dissociation degree mainly refers to the ratio of the number of particles of the mineral monomer dissociation particles to the sum of the number of particles of the mineral-containing intergrown particles and the number of monomer dissociation particles of the mineral, and the result is expressed in percentage. If the grinding product is too coarse, the dissociation of the ore material is insufficient, which may affect the concentrate grade and recovery of the selected ore. However, if the ore is pulverized to be fine, the dissociation of the ore is promoted to be sufficient, but a large amount of fine particles which are difficult to separate are generated, and the ore is lost, that is, "over-pulverization" occurs. The 'over-crushing' not only can not play a favorable role in the sorting process, but also can reduce the concentrate grade and the recovery rate, and because the 'unnecessary work' is performed by the over-crushing, the consumption of other aspects such as equipment, manpower and the like in the crushing process and the sorting process is increased, and the ore dressing cost is indirectly increased.
Duroplast is a metamorphic rock formed by regional metamorphic effects. The garnet mainly comprises garnet and green pyroxene with content more than 80%, the garnet is iron-aluminum-magnesium-aluminum-calcium-aluminum-garnet series, and the green pyroxene is monohedron containing diopside, calcium-iron-pyroxene, jadeite and awl pyroxene. The mineral composition contains small amount of secondary minerals such as chrysolite, corundum, diamond, clinoptilolite, polysilica muscovite, kyanite, ulexite, clinozoisite, glauconite, hornblende, rutile, etc. The garnet is a nonmetal mineral product with wide application field and high application benefit. Garnet has the characteristics of sharp edges and corners of particles, large specific gravity and hardness, stable chemical property and the like, and has a plurality of applications in the aspects of sand blasting (or sand blowing or sand blasting), grinding and abrading, hydraulic cutting, filtering water, filling, public buildings, precise instruments, jewel development and the like.
Therefore, a reasonable ore grinding process in the ore dressing process is an important condition for realizing good separation of useful minerals and gangue minerals. The ore dressing should pay attention to the selection of the crushing flow and equipment, the operation conditions of ore grinding are strictly mastered, and the fineness of the ore grinding is strictly controlled within the range determined by the ore dressing.
The invention content is as follows:
the invention aims to solve the problems and provide an ore grinding process for reducing the over-crushing of products, which reduces the over-crushing phenomenon of the products, has simpler overall process flow, lower energy consumption and low production cost, recycles useful minerals in ores to the maximum extent, and has the advantages of simple equipment, convenient operation, easy realization, high grading efficiency, large production capacity, high product quality and stable operation.
In order to solve the above problems, the present invention provides a technical solution:
an ore grinding process for reducing excessive crushing of durite type minerals is characterized by comprising the following steps:
a: feeding the crushed qualified raw ore into a spiral ore washer, and separating the ore from mud after ore washing;
b: feeding the ore obtained in the step a into a rod mill, wherein the ore can be prevented from being excessively ground by the grinding characteristic of the rod mill, ore pulp can be produced after ore grinding, and the ore pulp is sent to the next procedure;
c: b, feeding the ore pulp obtained in the step b into a linear vibrating screen, returning coarse particles on the screen to a rod mill for regrinding, and feeding qualified undersize fine particles into subsequent ore dressing;
d: and (b) feeding the overflow generated in the step (a) into a hydrocyclone for desliming and grading to obtain settled sand and overflow, and feeding the settled sand into a subsequent ore dressing process for subsequent treatment of the overflow.
And (b) as a preferable technical scheme of the invention, the raw ore which is qualified in crushing in the step (a) is fed into a spiral ore washer by a feeder, the spiral ore washer conveys the ore through the separation of spiral feeding, the function of conveying and washing the ore is realized, and the feeder is added with additional water to ensure that the water for washing the ore is sufficient.
As a preferable technical scheme of the invention, the return sand after ore washing in the step a is conveyed to a rod mill sand making machine by a belt conveyor, and the rod mill sand making machine is conveyed to a hydrocyclone for desliming and grading by an overflow pump.
As a preferred technical scheme of the invention, in the linear vibrating screen in the step c, the aperture of a screen hole is 0.15mm, the height of the feeding end of the vibrating screen is lower than that of the discharge hole of the rod mill sand making machine, ore pulp after grinding directly flows to the linear vibrating screen by gravity, materials below the screen are sent to a sorting procedure by a pump, and coarse grains on the screen return to be ground again.
As a preferred technical scheme of the invention, the ore grinding and sand making machine in the step b has no over-crushing phenomenon, the granularity of the finished product is very uniform, the phase is better, the yield is high, and the yield is high.
As a preferred technical scheme of the present invention, the cyclone in step d has a simple structure, high classification efficiency up to 80%, and can be efficiently processed by classification, and the classified particle size of the cyclone is fine, so that the requirements of industrial production can be met.
The invention has the beneficial effects that: the method adopts a novel simple equipment process to carry out selection, grinding and grading on the durite type ore, reduces the over-crushing phenomenon of the product, has simpler whole process flow, lower energy consumption and low production cost, recycles useful minerals in the ore to the maximum extent, and has the advantages of simple equipment, convenient operation, easy realization, high grading efficiency, large production capacity, high product quality and stable operation.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
Fig. 1 is a flow chart of the beneficiation process of the present invention.
The specific implementation mode is as follows:
as shown in fig. 1, the following technical solutions are adopted in the present embodiment: an ore grinding process for reducing excessive crushing of durite type minerals is characterized by comprising the following steps:
a: feeding the crushed qualified raw ore into a spiral ore washer, washing the ore through the ore washer, and separating the ore from mud after washing the ore so as to avoid influencing the production of the positive product;
b: b, feeding the ore obtained in the step a into a rod mill, and effectively grinding the ore to produce ore pulp;
c: b, feeding the ore pulp obtained in the step b into a linear vibrating screen, performing vibration excitation screening on the ore pulp through the vibrating screen, feeding the screened coarse grains back to a rod mill for secondary grinding, and feeding the qualified undersized fine grains into a subsequent ore dressing process;
d: and (b) conveying the overflow produced in the step (a) to a hydrocyclone for desliming and grading to obtain settled sand and overflow, and performing subsequent ore dressing and overflow subsequent treatment on the settled sand.
And c, feeding the qualified raw ore crushed to be 15mm in the step a into the spiral ore washer by a feeder, adding supplementary water on the feeder, and ensuring that the amount of water used for washing the ore is enough by supplementing the water so as to avoid the problem that the ore cannot be washed due to insufficient water.
And c, conveying the returned sand subjected to ore washing in the step a to a rod mill sand making machine by a belt conveyor, and conveying the sand to a hydrocyclone by an overflow pump for desliming and grading, so that desliming is more efficient, and the production progress is increased.
Wherein, the linear vibrating screen in step c, the sieve mesh aperture is 0.15mm, the height of the feed end of vibrating screen is less than the height of the sand making machine discharge opening of rod mill, the ore pulp after grinding directly flows to the linear vibrating screen by gravity, no extra conveying equipment is needed, the conveying flow is simplified, the production efficiency is improved, the material pump under the screen is sent to the sorting process, the coarse grain on the screen returns to regrind, the effect of grinding is guaranteed by realizing multiple grinding.
Wherein, the ore grinding and sand making machine in the step b has no over-crushing phenomenon, the granularity of the finished product is very uniform, the grade is better, the yield is high and the rate of finished products is high.
And d, the cyclone in the step d is simple in structure and high in classification efficiency, the classification efficiency can reach more than 80%, and the classification granularity of the cyclone is fine, so that the requirement of industrial production can be met. In addition, the cyclone has low manufacturing cost, less material consumption and more economic value.
Specifically, carry out the ore washing operation in sending into spiral log washer with the ore, the principle through spiral pay-off is accomplished the ore at the process of carrying and is washed, the silt that will wash after the ore washing is separately with the ore, then grind in sending into the rod mill with the ore, the grinding through the rod mill can obtain the ore pulp, then send the ore pulp to and carry out screening treatment in the reciprocating sieve, can carry out efficient screening processing through vibrations, avoid during unqualified material gets into one process, the unqualified ore that screens out sends back the rod mill and continues to grind, qualified then send to next process and produce.
While there have been shown and described what are at present considered to be the fundamental principles of the invention and its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (6)
1. An ore grinding process for reducing excessive crushing of durite type minerals is characterized by comprising the following steps:
a: feeding the crushed qualified raw ore into a spiral ore washer, and separating the ore from mud after ore washing;
b: feeding the ore obtained in the step a into a rod mill, and producing ore pulp after ore grinding;
c: b, feeding the ore pulp obtained in the step b into a linear vibrating screen, returning the coarse fraction on the screen to a rod mill for regrinding, and feeding qualified undersize fine particles into subsequent ore dressing;
d: and (b) feeding the overflow generated in the step (a) into a hydrocyclone for desliming and grading to obtain settled sand and overflow, and feeding the settled sand into a subsequent ore dressing process for subsequent treatment of the overflow.
2. The ore grinding process for reducing overpull of durite-type minerals according to claim 1, wherein: and c, feeding the qualified raw ore crushed to be 15mm into the spiral ore washer by a feeder, wherein the feeder is added with supplementary water.
3. The ore grinding process for reducing overpull of durite-type minerals according to claim 1, wherein: and (c) conveying the returned sand subjected to ore washing in the step a to a rod mill sand making machine by a belt conveyor, wherein the rod mill sand making machine is used for desliming and grading the overflow pump to a hydrocyclone.
4. The ore grinding process for reducing overpull of durite-type minerals according to claim 1, wherein: in the step c, the aperture of the screen hole of the linear vibrating screen is 0.15mm, the height of the feeding end of the vibrating screen is lower than that of the discharge hole of the rod mill sand making machine, the ore pulp after ore grinding directly flows to the linear vibrating screen by gravity, the material pump below the screen is sent to the sorting process, and the coarse grains on the screen return to regrind.
5. The ore grinding process for reducing overpull of durite-type minerals according to claim 1, wherein: the ore grinding and sand making machine in the step b has no over-crushing phenomenon, the granularity of the finished product is very uniform, the product phase is better, the yield is high, and the yield is high.
6. The ore grinding process for reducing overpull of durite-type minerals according to claim 1, wherein: the cyclone in the step d has simple structure and high grading efficiency which can reach more than 80 percent, and the grading granularity of the cyclone is fine, thus meeting the requirements of industrial production. In addition, the cyclone has low manufacturing cost, less material consumption and more economic value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210104350.7A CN114405660A (en) | 2022-01-28 | 2022-01-28 | Ore grinding process capable of reducing excessive crushing of product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210104350.7A CN114405660A (en) | 2022-01-28 | 2022-01-28 | Ore grinding process capable of reducing excessive crushing of product |
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| CN114405660A true CN114405660A (en) | 2022-04-29 |
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| CN202210104350.7A Pending CN114405660A (en) | 2022-01-28 | 2022-01-28 | Ore grinding process capable of reducing excessive crushing of product |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2830979A1 (en) * | 1978-07-14 | 1980-01-31 | Uranerzbergbau Gmbh & Co Kg | Uranium ore treatment by crushing and leaching - with sepn. of very fine fraction in hydrocyclones before filtering or centrifuging of remaining solids and liquids |
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| WO2010072276A1 (en) * | 2008-12-23 | 2010-07-01 | Maschinenfabrik Köppern Gmbh & Co. Kg | Method and apparatus for comminuting mineral ground product |
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| CN106391298A (en) * | 2016-09-20 | 2017-02-15 | 昆明理工大学 | Closed circuit ore grinding classification method |
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-
2022
- 2022-01-28 CN CN202210104350.7A patent/CN114405660A/en active Pending
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